Hose-coupling.



No. 659,071. Patented Oct. 2, I900.

S. JOSEPH & W. H. &, W. J. CLARK.

HOSE COUPLING.

lApplication filed Feb. 2, 1900.)

(No Model.) 2 Shoots-Sheet l.

WITNESSES flaw/94W Z/W rH: uonms Pmnsco. Puoioumou WASHINGTON, u c

No. 659,07lj Patented Oct. 2, I900.

S. JOSEPH & W. H'. 8:. W. J. CLARK.

HOSE COUPLING.

(Application filed Feb. 2, 1900. (No Model.) 2 Sheets-Sheet 2.

WITNESSES: INVE TOHS OHNEYS Fries.

SHELDON JOSEPH, OF COLUMBUS, AND WILLIAM H. CLARK AND WILLIAM J. CLARK, OF'SALEM, OHIO, ASSIGNORS TO THE W. J. CLARK COMPANY,

O F SALEM, OHIO.

HOSE-COUPLING.

SPECIFICATION formingoart of Letters Patent No. 659,071, dated October 2, 1900.

Application filed. February 2, 1900. serial No. 3,691. \NO odeL) To all whom it may concern:

Be it known that we, SHELDON JOSEPH, a resident of Columbus, in the county of Franklin, and WILLIAM H. CLARK and WILLIAM J CLARK, residents of Salem, in the countyof Columbiana, State of Ohio, citizens of the United States, have invented a new and Improved Hose-Coupling, of which the following is a full, clear, and exact description.

Our invention relales to that class of hosecmipling for which Letters Patent were granted to Joseph S. Blackburn, April 18, 1895, No. 537,744, and December 29, 1896, No. 574,236; and the object of the invention consists in adapting such coupling for use where theinternal pressure in the hose is less than the external pressure.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to he had to the accompanyingdrawings, forming a part of this specification, in which similar characters of reference indicate corresponding par-ts in all the figures.

Figure 1 is a perspective view of the members of the improved coupling separated.

Fig. 2 is a longitudinal vertical section through the two members of the coupling connected. Fig. 3 is a longitudinal vertical section through the female portion of the coupling, illustrating a slight modification in the construction of the same. Fig. i is a partial side. elevation and a partial sectional view of another 3: form of coupling to which the invention is applied; and Fig. 5 is aplan view of one section of the coupling, illustrating the application of levers to the clamping or looking jaws. The coupling, as usual, consists of a male section A and a female section B, the heads of the two sections being provided with the usual tubular shanks or extensions 10, adapted to receive the hose. The head of the male section is recessed upon its inner face, and 45 in said recessed portion a tube 11 of elastic material, preferably rubber, is cemented or secured in any approved manner, and this elastic tube 11 extends beyond the front edge of the head for a suitable distance. The fe- 50 male section B of the coupling is provided with a non-elastic or metal tube 12, securely fitted in it, and the said metal tube 12 preferably terminates about flush with the outer or front edge of the said female section, while an annular chamber 13 is formed between the metal tube 12 and the contiguous face of the head of the section, as shown in Fig. 23, and this chamber, when a coupling is to be effected, receives the projecting portion of the elastic tube 11, secured to the male section of the coupling. The interiorof themetal tube 12 is preferably of the same diameter as the interior of the tubular shank of the female section B, while the interior diameter of the elastic tube 11 of the male section is slightly larger than the diameter of the chainberin the shank of said section. The head of the female section B is provided also with an exterior annular shoulder 14. The head of the male section A of the coupling is provided with two opposing jaws and 16, preferably of skeleton construction, and these jaws extend beyond the front of the head practically flush with the outer end of the elastic tube 11, and each jaw is provided with an interior annular shoulder 17, adapted to engage with the exterior shoulder 14 on the head of the female coupling-section when the two sections are brought together. The jaws 15 and 16 of the male section A are normally held close to the head by a spring 18, and preferably the spring is a strap-spring, and the body of the springis located within the jaws above the head, crossing the upper opening between the jaws, and the ends of the spring 18 have exterior bearing on connecting-bars 19,which extend from one member of the jaw to the other at the sides of the coupling, as shown particularly in Fig. 1.

A rectangular space 20 is formed between the opposing ends of the jaws 15 and 16, and these spaces are adapted to receive the rectangular tongue 21 of a wrench 22, the tongue being at a right angle to the body of the wrench. When the tongue is placed in an opening 20, it is introduced longitudinally thereof, and the wrench is then turned, so as to bring the tongue transversely of the opening into which it is introduced, thus separating the jaws and permitting the sections of the coupling to be readily disconnected. The jaws are pivoted to the male section of the coupling in any approved manner.

Under the form of couplings covered by the Blackburn patents two metal tubes are employed, and an elastic tube is secured within one of the metal tubes and is adapted to enter the mating tube, so that when a fluid-pressure is maintained inside of the coupling it will expand the elastic tube and prevent any leakage through the joint between the two metal tubes, and the coupling is prevented from pulling apart endwise by jaws somewhat similar to those which have been described. hen this form of coupling is used, where the external pressure exceeds the internal pressn re the elastic tube is liable to collapse, and thus permit leakage, and the prime object of this improvement is to prevent said elastic tube from collapsing, and thus obviate leak- This result is obtained in the manner which has been above described-namely, by causing the elastic tube in the coupling process to enter a space between two non-yielding walls,which prevents the collapse of the elastic tube, and the external pressure on the elastic tube compresses it on the inner non-yielding wall or tube 12, thus producing a joint between the two sections which will be positively close.

In the event that the difference of pressure between the inside and outside of the coupling is small the cheaper construction shown in Fig. 3 may be employed, in which it may be observed that a short metal tube 23 is employed instead of the longer tube 12, (shown in Fig. 2,) and this short metal tube 23 is virtually a continuation of and is integral with the chamber in the shank 10 of the female section B.

e desire it to be understood that we do not restrict ourselves to the style of coupling shown in Figs. 1, 2, and 3, in which the tubular shanks or extensions 10 are adapted to enter the hose, as the form of coupling shown in Fig. at is equally adaptable to our purpose. In this latter style of coupling the shank 10 interiorly receives the hose C, and the hose under this construction is held firmly in the coupling-shank by means of an internal expansion-ring of any approved construction, or the equivalent of the same, which device is placed in the bore or chamber of the hose, expanding or pressing the hose outward against the inner wall of the coupling-shank.

It will be understood that instead of using a tool to separate the clamping or looking jaws 15 and 16 of the coupling thumb-levers 24 and 25 may be substituted, as shown in Fig. 5, which levers may be held closed by a spring 26 or may be otherwise controlled, as desired.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. In a hose-coupling, a section provided within its head with a metallic tubular extension separated from the contiguous surface of the head by an annular chamber, and a mating section provided with a flexible tube extending therefrom and adapted to enter the said chamber of the first-named section between the wall of the head and the tubular extension, for the purpose described.

2. In a hose-coupling, a section provided within its head with a tubular extension separated from the contiguous surface of the head by an annular chamber the interior of the said tubular extension being of the same diameter as the interior of the shank of the section, a mating section having a flexible tube securedwithin its head and extending therefrom, the interior diameter of the flexible tube being greater than the interior diameter of the shank of said last-named section the said flexible tube being adapted to enter the space or chamber between the wall of the head of the first-named section and the tubular extension, and means for locking the sections of the coupling together, substantially as described.

3. In a hose-coupling, a section the head of which is provided with an inner tube separated from the head proper by an annular chamber, a mating section having a flexible tube attached to its head and projecting beyond the same, adapted to enter the chamher in the first-named section, pivoted jaws carried by the section having the flexible tube and arranged for locking engagement with the head of the first-named section, and a spring crossing the opening between the jaws, and serving to hold both jaws normally in locking position, the jaws being so constructed that they may be separated by a tool, as described.

SHELDON JOSEPH. WILLIAM H. CLARK. IVILLIAM J. CLARK.

Witnesses to signature of Sheldon Joseph:

0. H. MORRIS, ORA MCAULEY.

\Vitnesses to signatures of William H. Clark and \Villiam J. Clark:

A. J. KING, JOHN E. ROGERS. 

